According to An Essay Towards a Topographical History of the County of Norfolk:... Vol VI, 1807, by Francis Blomefield & Charles Parkin, Thomas Marsham, alderman of London, by his wife Magdalen Springham had 6 sons and 4 daughters, and from John their 2nd son, descended Robert Marsham, Bt., now Lord Romney (in the Peerage 1741)... etc. See p. 334 for more detail. (Free Ebook via Google.)